Model No. GDCS-150NP/GDCS-200NP

User Manual
PRECISION MEASURING TOOLSDIGITAL NECK CALIPERS POINT JAW TYPE
Thank you for purchasing Niigata Seiki Digital Neck Calipers Point Jaw Type.
This precision measuring tool measures makes point contact measurement of concave and grooved parts.
●For safe and proper use, please read this instruction manual before use and follow the procedures described.
Please keep manual where it is accessible to user for future reference.
●Keep this manual with the instrument if transferred or leased to a third party.
●For inquiries about this product, please contact dealer or Niigata Seiki at the address listed on the following page.

■PART IDENTIFICATION AND FUNCTION④ Lock Screw⑤ [HOLD] Button⑥Output Connector③ LCD Display②Jaws※Model GDCS-150NP Shown.

⑩Scale⑦Battery Cover⑧ [ZERO] Button⑨ [ON/OFF] Button① Probe Tips

① Probe Tips……………………………… Measuring surfaces which contact the workpiece.
② Jaws …………………………………… For positioning on Object to be measured.
③ LCD Display …………………………… Displays digital measurement.
④ Lock Screw……………………………… Tighten to prevent the slide and display from moving.
⑤ [HOLD] Button ………………………… When pressed, "HOLD"Icon appears on Display and measurement will be fixed.
⑥ Output Connector …………………… Connect to optional Bluetooth Box to send measurements to PC.
⑦ Battery Cover ………………………… Open to access battery.
⑧ [ZERO] Button………………………… When pressed, Display will read "0.00".
⑨ [ON/OFF] Button ……………………… For turning power ON / OFF.
⑩ Scale …………………………………… Supports LCD Display Unit.

SAFETY PRECAUTIONS
To prevent harm to yourself or others, and to prevent damage toproperty, always follow the procedures marked by the followingsymbols.

WARNING

Please Observe
Denotes a prohibition You MUST NOT do

Denotes a requirement You MUST do

Indicates risk of personal injury or property damage if not followed.

Read the manual and follow the directions.
・Use of product other than as described in this manual
may cause accident.
Use only for measuring.
・Use for any purpose other than measuring may
damage or wear the instrument. Improper use may
also cause accident.
Handle with Care.
・Do not drop or subject instrument to excessive shock.
Do not place under heavy objects. Improper handling
may cause damage or poor accuracy.
・Do not scratch instrument, for example by writing IDnumber.
Avoid using in high electric fields, such as nearfluorescent lights or switching power supplies.
・Incorrect value may be displayed on LCD.

Use and store only in environment meeting thefollowing conditions:●Dry location protected from rain, water, and oils.
●Location that is not excessively hot.
●Location protected from use by children andunauthorized people.
・Use in places contrary to the above may cause
damage to the product resulting in accident or injury.
Do not use excessive force during measurement.
・The Probe Tips may be bent, causing inaccuracy.
Do not disassemble or modify.
・Disassembly may damage product or cause accident.
For repair, please contact distributor or place ofpurchase.
Do not write on instrument with electric engraver.
・Do not engrave instrument body or jaws, such as an ID
number with engraver or electric pen.

PREPARATION FOR USE■Power ON/OFFBefore using the calipers, please follow the steps below:●Wipe off rust proofing and dirt from measuring
surfaces and slide.
Contamination of surfaces may cause measurement error.

●Allow the calipers and object to be measured time toreach the same temperature.
A temperature difference between the object to be measured
and the caliper may cause measurement error. Allow enoughtime for the temperatures to equilibrate.

INSERTING・REPLACING BATTERY■Absolute Measurement Mode

①Loosen the lock screw, and turn on power.
②With jaws closed and Probe Tips touching, press the [ZERO]
Button.
③When “0.00mm” is displayed on LCD, Calipers is ready to startmeasurement.
①Loosen the lock screw, and turn on power.
②With Probe Tips open to desired reference position (any pointis OK,) press [ZERO] Button.
③When “0.00mm” is displayed on LCD, Calipers is ready to startmeasurement.

vemoReUse only CR2032 typebattery.

●Use care to avoid damaging
terminals when inserting
battery.

①To turn on, press the [ON/OFF] Button.
②To turn off, press the [ON/OFF] Button.
③With power on, press the [HOLD] Button to fix the value on thedisplay.

■Comparisons Measure Mode

① Slide cover in direction of arrow.
② Insert battery with (+) side outward.
③ Replace battery cover.
NoticeHOW TO USE

BatteryCover●Terminals may be broken if battery is pressed straight down.
●Insert battery at angle, underneath the small hook, as shown.
Battery

SERVICEPressed Down

Hook
Slide In

Terminals
Terminals

Battery●If Instrument is not working properly, or if you have any
questions, please contact distributor or place of purchase.
●Please note, manufacturer is unable to respond to inquires orprovide service directly. Please contact distributor or place ofpurchase.

TROUBLESHOOTINGPRODUCT SPECIFICATIONS

Q. Nothing is displayed on LCD.
A. The battery may be running low, please replace battery
with a new one.
Q. With power on, the number on the LCD does not change
as Display Unit is moved.
A. Please reset by removing battery for about 30sec., andthen replacing.
Q. Nothing happens when buttons are pressed.
A. Make sure battery is properly inserted.
Q. The characters “MIN”, “MAX”, or “△” are displayed on LCD.
A. Cycle power, or apply several long presses to [HOLD]
Button. Use as normal once character is off.
Q. The correct value is not displayed.
A. High humidity may cause dampness. Please dry off the
instrument and use only in dry location.

Measuring Range
Model No.
0 - 150mm
GDCS-150NP
0 - 200mm
GDCS-200NP

AFTER USE CARE・STORAGE

Accuracy※±0.03mm±0.04mm

Weight200g
230g※Not including quantization error (±1 count)●Resolution : 0.01mm●Display: 5 Digit LCD●Auto Off: approx. 20 min.
●Maximum response speed : Slide to Right ..... 1.5 m/s
Slide to Left ....... 0.75 m/s※Left/Right as shown in diagram at top of manual.

0°C~ 40°C●Operating Temperature Range :●Storage Temperature Range : −10°
C~ 60°C●Power: (1x) CR2032 Lithium Battery●Battery Life : approx. 2.5 years in normal use●Accessory : CR2032 Lithium Battery (for test)●After use, wipe off any dirt or oil from measuring
surfaces, sliding surfaces, and exterior using a dry
cloth and perform rust prevention treatment.
For rust prevention, lightly apply anti-rust oil, or place in rustpreventive bag.

●Store with Lock Screw loosened.

If stored with Lock Screw tight, expansion due to temperaturechanges may cause excessive force which will cause inaccuracy.

●Store in a cool, dry, and dark location in the providedcase.
Keep out of direct sunlight and moisture, and please keep
secure from unauthorized personnel.

●Remove battery if Caliper will not be used for a long
period of time.

Niigata seiki Co., Ltd.
6-15-22, Tsukanome, Sanjo, Niigata, Japan, 955-0055
Tel. : +81-256-31-5670 Fax. : +81-256-39-7730

MAIL:intl.sales@niigataseiki.co.jp
URL http://www.niigataseiki.co.jp
I368-K 1811